不卡视频在线一区_日韩精品一区高清电影_动漫无遮挡h纯肉亚洲资源大片_男人天堂视频一区二区_亚洲日韩一区精品射精

當前位置:首頁-新聞資訊

鋁板生產廠家介紹生產中殘余應力的產生

來源:http://www.cettools.cn/ 發布時間:2021-04-28

殘余應力是材料在變形過程中或鑄件生產過程中的不均衡塑性變形,或是對它們進行機械加工、熱處理及焊 接等作業時所引進的。軋制板材時,若軋直徑小,則在表層產生壓縮殘余應力,若軋輥直徑大如平整一壓光軋制時,則板材表層部分為拉伸應力而在中心部分為壓縮應力。
Residual stress refers to the unbalanced plastic deformation of materials in the process of deformation or casting production, or is introduced when they are machined, heat treated and welded. When rolling the plate, if the rolling diameter is small, the compressive residual stress will appear on the surface. If the roll diameter is large, such as flat calendering rolling, the tensile stress will appear on the surface and the compressive stress will appear on the center.
鋁板生產廠家
Aluminum plate manufacturer


軋制后板材沿厚度在軋制方向上表層殘余著拉應力,內層金屬殘余著壓應力,固溶處理時板材被加熱到再結晶溫度以上,軋制過程中所形成的殘余內應力得以消 除。將加熱后的板材快速放入冷水槽中或噴水淬火,此時由于表面金屬冷 卻得比內層的快,淬火初期表層金屬劇冷、急劇收縮,基于板材的整體性,表層金屬產生拉應力,內層金屬產生壓應力。
After rolling, the residual tensile stress in the surface layer and the residual compressive stress in the inner layer along the rolling direction of the thickness of the plate. During solution treatment, the plate is heated above the recrystallization temperature, and the residual internal stress formed in the rolling process is eliminated. When the heated plate is quickly put into a cold water bath or quenched by water spray, the surface metal cools faster than the inner metal, and the surface metal cools sharply and shrinks sharply at the initial stage of quenching. Based on the integrity of the plate, the surface metal produces tensile stress and the inner metal produces compressive stress.
隨著板材的進一步冷 卻
With the further cooling of the plate
使內層金屬劇冷、急劇收縮,使應力重新分配,導致表層金屬殘余壓應力內層金屬殘余拉應力,與其軋制過程殘余的內應力分布規律正好相反。殘余應力大小決定于材料性質、形狀及熱處理條件等。就材料性質來說,在一般情況下,熱導率越高、熱膨脹系數越小彈性模量越低、高溫強度越低,殘余應力就越小。
The results show that the residual compressive stress in the surface layer and the residual tensile stress in the inner layer are opposite to the residual internal stress in the rolling process. The magnitude of residual stress depends on material properties, shape and heat treatment conditions. In general, the higher the thermal conductivity, the smaller the coefficient of thermal expansion, the lower the modulus of elasticity and the strength at high temperature, the smaller the residual stress.
此外,鑄造、焊 接等過程中都會引起殘余應力,零件裝配不當也會引發殘余應力,甚至時效處理也會有殘余應力,并引起尺寸的微小變化,在復合材料中由于材料性質的不同,不可避免地存在著殘余應力。
In addition, casting, welding and other processes will cause residual stress, improper assembly of parts will also cause residual stress, even aging treatment will also have residual stress, and cause small changes in size. In composite materials, due to different material properties, there are inevitably residual stress.

主站蜘蛛池模板: 午夜亚洲福利在线老司机| 亚洲色大成网站www永久在线观看| 永久免费看mv网站入口亚洲| 日韩欧美日韩一区二区| 国产亚洲精品久久久久婷婷图片| 国产精品一区二区久久乐下载| 丝袜一区综合在线| 欧美亚洲日本国产综合在线| 极品尤物在线精品一区二区三区 | 九九久久精品国产| 亚洲精品第一区| 在线观看av永久免费| 日本成人精品视频一区二区三区| 国产成人精品a视频| 犯人妻中字幕一区二区三区四区| 高清一区二区中文字幕| 一区二区三区免费高清视频| 久久精品囯产精品亚洲| 日本一区久久熟女| 亚洲成av人片在线播放一区二区| 日韩精品成人一区二区三区视频| 天堂av一区二区三区| 亚洲日本精品一区久久精品| 日韩欧美亚洲国产一区二区| 久久成人精品一区二区 | 中文字幕麻豆一区| 人妖欧美一区二区| 国产精品香蕉一区二区三区| 午夜18一区二区三区| 国产免费无码av在线观看| 日韩毛片视频一区二区三区| av蓝导航精品导航| 在线观看黄一区| 欧美一区日韩二区国产三区| 黄色一区二区三区四区五区| 中文字幕一区二区三区在线中文| 日韩欧美另类一区| 欧美国产精品乱子码一区二区三区 | 中文字幕av一区二区三区人妻少| 亚洲欧美一区二区精品久久久| 人妻中文字幕在线一区|